Wireshark mailing list archives
Re: Experiencing Packet Loss in High Volume Packet Capture Application using DUMPCAP
From: Banyan He <banyan () rootong com>
Date: Sun, 25 Nov 2012 18:31:38 +0800
check out netstat -s seeing if you can find where it is being dropped. Also remember ethtool -s <int> for the NIC driver level. You probably can try out tcpdump for the capture as well seeing if you can find the difference. Just in case, it is the problem with wireshark.
------------ Banyan He Blog: http://www.rootong.com Email: banyan () rootong com On 2012-11-24 6:31 AM, John Powell wrote:
Hi Everyone,I am running CentOS 6.3 on a HP 8200 using 3TB WD Green drives using a EXT4 file system.I am using Wireshark 1.8.2 compiled from source. I am using DUMPCAP to rotate and store historical Packet Captures.Whether I capture the packets with Wireshark or view the DUMPCAP created file, I see dropouts in the packets being captured.I tried to turning off journalling but this did not seem to help much: umount /dev/mapper/VolGroup00-LogVol_Data /sbin/tune2fs -o journal_data_writeback /dev/mapper/VolGroup00-LogVol_Data /sbin/tune2fs -O ^has_journal /dev/mapper/VolGroup00-LogVol_Data /sbin/e2fsck -f /dev/mapper/VolGroup00-LogVol_DataI have a attached a couple of IOGraphs from Wireshark showing the packet drops.Thanks alot! -John
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Current thread:
- Experiencing Packet Loss in High Volume Packet Capture Application using DUMPCAP John Powell (Nov 24)
- Re: Experiencing Packet Loss in High Volume Packet Capture Application using DUMPCAP Banyan He (Nov 25)
- Re: Experiencing Packet Loss in High Volume Packet Capture Application using DUMPCAP John Powell (Nov 26)
- Re: Experiencing Packet Loss in High Volume Packet Capture Application using DUMPCAP Jeff Morriss (Nov 26)
- Re: Experiencing Packet Loss in High Volume Packet Capture Application using DUMPCAP John Powell (Nov 26)
- Re: Experiencing Packet Loss in High Volume Packet Capture Application using DUMPCAP Jeff Morriss (Nov 26)
- Re: Experiencing Packet Loss in High Volume Packet Capture Application using DUMPCAP Guy Harris (Nov 26)
- Re: Experiencing Packet Loss in High Volume Packet Capture Application using DUMPCAP John Powell (Nov 26)
- Re: Experiencing Packet Loss in High Volume Packet Capture Application using DUMPCAP Banyan He (Nov 25)